Buggy code:
private ResultSet getTablesX ( String catalog , String schemaPattern , String tableNamePattern , String [ ] types ) throws SqlException { } public ResultSet getSchemas ( ) throws SQLException { } private ResultSet getSchemasX ( ) throws SqlException { } public ResultSet getCatalogs ( ) throws SQLException { } private ResultSet getCatalogsX ( ) throws SqlException { } public ResultSet getTableTypes ( ) throws SQLException { } private ResultSet getTableTypesX ( ) throws SqlException { } public ResultSet getColumns ( String catalog , String schemaPattern , String tableNamePattern , String columnNamePattern ) throws SQLException { } private ResultSet getColumnsX ( String catalog , String schemaPattern , String tableNamePattern , String columnNamePattern ) throws SqlException { } public ResultSet getColumnPrivileges ( String catalog , String schema , String table , String columnNamePattern ) throws SQLException { } private ResultSet getColumnPrivilegesX ( String catalog , String schema , String table , String columnNamePattern ) throws SqlException { } public ResultSet getTablePrivileges ( String catalog , String schemaPattern , String tableNamePattern ) throws SQLException { } private ResultSet getTablePrivilegesX ( String catalog , String schemaPattern , String tableNamePattern ) throws SqlException { } public ResultSet getBestRowIdentifier ( String catalog , String schema , String table , int scope , boolean nullable ) throws SQLException { } private ResultSet getBestRowIdentifierX ( String catalog , String schema , String table , int scope , boolean nullable ) throws SqlException { } public ResultSet getVersionColumns ( String catalog , String schema , String table ) throws SQLException { } private ResultSet getVersionColumnsX ( String catalog , String schema , String table ) throws SqlException { } public ResultSet getPrimaryKeys ( String catalog , String schema , String table ) throws SQLException { } private ResultSet getPrimaryKeysX ( String catalog , String schema , String table ) throws SqlException { } public ResultSet getImportedKeys ( String catalog , String schema , String table ) throws SQLException { } private ResultSet getImportedKeysX ( String catalog , String schema , String table ) throws SqlException { } public ResultSet getExportedKeys ( String catalog , String schema , String table ) throws SQLException { } private ResultSet getExportedKeysX ( String catalog , String schema , String table ) throws SqlException { } public ResultSet getCrossReference ( String primaryCatalog , String primarySchema , String primaryTable , String foreignCatalog , String foreignSchema , String foreignTable ) throws SQLException { } private ResultSet getCrossReferenceX ( String primaryCatalog , String primarySchema , String primaryTable , String foreignCatalog , String foreignSchema , String foreignTable ) throws SqlException { } public ResultSet getTypeInfo ( ) throws SQLException { } private ResultSet getTypeInfoX ( ) throws SqlException { } public ResultSet getIndexInfo ( String catalog , String schema , String table , boolean unique , boolean approximate ) throws SQLException { } private ResultSet getIndexInfoX ( String catalog , String schema , String table , boolean unique , boolean approximate ) throws SqlException { } public ResultSet getUDTs ( String catalog , String schemaPattern , String typeNamePattern , int [ ] types ) throws SQLException { } private ResultSet getUDTsX ( String catalog , String schemaPattern , String typeNamePattern , int [ ] types ) throws SqlException { } private String getOptions ( ) { } private ResultSet executeCatalogQuery ( PreparedStatement cs ) throws SqlException { } public java . sql . Connection getConnection ( ) throws SQLException { } public boolean supportsNamedParameters ( ) throws SQLException { } public boolean supportsMultipleOpenResults ( ) throws SQLException { } public boolean supportsGetGeneratedKeys ( ) throws SQLException { } public ResultSet getSuperTypes ( String catalog , String schemaPattern , String typeNamePattern ) throws SQLException { } private ResultSet getSuperTypesX ( ) throws SqlException { } public ResultSet getSuperTables ( String catalog , String schemaPattern , String tableNamePattern ) throws SQLException { } private ResultSet getSuperTablesX ( ) throws SqlException { } public ResultSet getAttributes ( String catalog , String schemaPattern , String typeNamePattern , String attributeNamePattern ) throws SQLException { } private ResultSet getAttributesX ( ) throws SqlException { checkForClosedConnectionX ( ) ; <START_BUG> String sql = "SELECT<seq2seq4repair_space>CAST(NULL<seq2seq4repair_space>AS<seq2seq4repair_space>VARCHAR(128))<seq2seq4repair_space>AS<seq2seq4repair_space>TYPE_CAT," + ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( "CAST(NULL<seq2seq4repair_space>AS<seq2seq4repair_space>VARCHAR(128))<seq2seq4repair_space>AS<seq2seq4repair_space>TYPE_SCHEM," + "VARCHAR('',<seq2seq4repair_space>128)<seq2seq4repair_space>AS<seq2seq4repair_space>TYPE_NAME," ) + "VARCHAR('',128)<seq2seq4repair_space>AS<seq2seq4repair_space>ATTR_NAME," ) + "SMALLINT(0)<seq2seq4repair_space>AS<seq2seq4repair_space>DATA_TYPE," ) + "VARCHAR('',129)<seq2seq4repair_space>AS<seq2seq4repair_space>ATTR_TYPE_NAME," ) + "0<seq2seq4repair_space>AS<seq2seq4repair_space>ATTR_SIZE," ) + "0<seq2seq4repair_space>AS<seq2seq4repair_space>DECIMAL_DIGITS," ) + "0<seq2seq4repair_space>AS<seq2seq4repair_space>NUM_PREC_RADIX," ) + "2<seq2seq4repair_space>AS<seq2seq4repair_space>NULLABLE," ) + "CAST(NULL<seq2seq4repair_space>AS<seq2seq4repair_space>VARCHAR(254))<seq2seq4repair_space>AS<seq2seq4repair_space>REMARKS," ) + "CAST(NULL<seq2seq4repair_space>AS<seq2seq4repair_space>VARCHAR(128))<seq2seq4repair_space>AS<seq2seq4repair_space>ATTR_DEF," ) + "0<seq2seq4repair_space>AS<seq2seq4repair_space>SQL_DATA_TYPE," ) + "0<seq2seq4repair_space>AS<seq2seq4repair_space>SQL_DATETIME_SUB," ) + "0<seq2seq4repair_space>AS<seq2seq4repair_space>CHAR_OCTET_LENGTH," ) + "0<seq2seq4repair_space>AS<seq2seq4repair_space>ORDINAL_POSITION," ) + "VARCHAR('',128)<seq2seq4repair_space>AS<seq2seq4repair_space>IS_NULLABLE," ) + "CAST(NULL<seq2seq4repair_space>AS<seq2seq4repair_space>VARCHAR(128))<seq2seq4repair_space>AS<seq2seq4repair_space>SCOPE_CATALOG," ) + "CAST(NULL<seq2seq4repair_space>AS<seq2seq4repair_space>VARCHAR(128))<seq2seq4repair_space>AS<seq2seq4repair_space>SCOPE_SCHEMA," ) + "CAST(NULL<seq2seq4repair_space>AS<seq2seq4repair_space>VARCHAR(128))<seq2seq4repair_space>AS<seq2seq4repair_space>SCOPE_TABLE," ) + "CAST(NULL<seq2seq4repair_space>AS<seq2seq4repair_space>SMALLINT)<seq2seq4repair_space>AS<seq2seq4repair_space>SOURCE_DATA_TYPE<seq2seq4repair_space>" ) + "FROM<seq2seq4repair_space>SYSIBM.SYSDUMMY1<seq2seq4repair_space>WHERE<seq2seq4repair_space>1=0<seq2seq4repair_space>WITH<seq2seq4repair_space>UR" ) ; <END_BUG> PreparedStatement ps = connection_ . prepareDynamicCatalogQuery ( sql ) ; return ps . executeQueryX ( ) ; } public boolean supportsResultSetHoldability ( int holdability ) throws SQLException { } public int getResultSetHoldability ( ) throws SQLException { } public int getDatabaseMajorVersion ( ) throws SQLException { } public int getDatabaseMinorVersion ( ) throws SQLException { } public int getJDBCMajorVersion ( ) throws SQLException { } public int getJDBCMinorVersion ( ) throws SQLException { } public int getSQLStateType ( ) throws SQLException { } public boolean locatorsUpdateCopy ( ) throws SQLException { } public boolean supportsStatementPooling ( ) throws SQLException { } protected abstract void computeFeatureSet_ ( ) { } private boolean getMetaDataInfoBoolean ( int infoCallIndex ) throws SQLException { } private int getMetaDataInfoInt ( int infoCallIndex ) throws SQLException { } private String getMetaDataInfoString ( int infoCallIndex ) throws SQLException { } private boolean getMetaDataInfoBooleanWithType ( int infoCallIndex , int type ) throws SQLException { } private boolean getMetaDataInfoInt_SupportsResultSetConcurrency ( int infoCallIndex , int type , int concurrency ) throws SQLException { } private boolean getMetaDataInfoBoolean_supportsConvert ( int infoCallIndex , int fromType , int toType ) throws SQLException { } private void metaDataInfoCall ( ) throws SqlException { } public final boolean supportsStoredFunctionsUsingCallSyntax ( ) throws SQLException { } public final boolean autoCommitFailureClosesAllResultSets ( ) throws SQLException { }

Fix:
String sql = "SELECT<seq2seq4repair_space>CAST(NULL<seq2seq4repair_space>AS<seq2seq4repair_space>VARCHAR(128))<seq2seq4repair_space>AS<seq2seq4repair_space>TYPE_CAT," + ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( "CAST(NULL<seq2seq4repair_space>AS<seq2seq4repair_space>VARCHAR(128))<seq2seq4repair_space>AS<seq2seq4repair_space>TYPE_SCHEM," + "VARCHAR('',<seq2seq4repair_space>128)<seq2seq4repair_space>AS<seq2seq4repair_space>TYPE_NAME," ) + "VARCHAR('',128)<seq2seq4repair_space>AS<seq2seq4repair_space>ATTR_NAME," ) + "0<seq2seq4repair_space>AS<seq2seq4repair_space>DATA_TYPE," ) + "VARCHAR('',129)<seq2seq4repair_space>AS<seq2seq4repair_space>ATTR_TYPE_NAME," ) + "0<seq2seq4repair_space>AS<seq2seq4repair_space>ATTR_SIZE," ) + "0<seq2seq4repair_space>AS<seq2seq4repair_space>DECIMAL_DIGITS," ) + "0<seq2seq4repair_space>AS<seq2seq4repair_space>NUM_PREC_RADIX," ) + "2<seq2seq4repair_space>AS<seq2seq4repair_space>NULLABLE," ) + "CAST(NULL<seq2seq4repair_space>AS<seq2seq4repair_space>VARCHAR(254))<seq2seq4repair_space>AS<seq2seq4repair_space>REMARKS," ) + "CAST(NULL<seq2seq4repair_space>AS<seq2seq4repair_space>VARCHAR(128))<seq2seq4repair_space>AS<seq2seq4repair_space>ATTR_DEF," ) + "0<seq2seq4repair_space>AS<seq2seq4repair_space>SQL_DATA_TYPE," ) + "0<seq2seq4repair_space>AS<seq2seq4repair_space>SQL_DATETIME_SUB," ) + "0<seq2seq4repair_space>AS<seq2seq4repair_space>CHAR_OCTET_LENGTH," ) + "0<seq2seq4repair_space>AS<seq2seq4repair_space>ORDINAL_POSITION," ) + "VARCHAR('',128)<seq2seq4repair_space>AS<seq2seq4repair_space>IS_NULLABLE," ) + "CAST(NULL<seq2seq4repair_space>AS<seq2seq4repair_space>VARCHAR(128))<seq2seq4repair_space>AS<seq2seq4repair_space>SCOPE_CATALOG," ) + "CAST(NULL<seq2seq4repair_space>AS<seq2seq4repair_space>VARCHAR(128))<seq2seq4repair_space>AS<seq2seq4repair_space>SCOPE_SCHEMA," ) + "CAST(NULL<seq2seq4repair_space>AS<seq2seq4repair_space>VARCHAR(128))<seq2seq4repair_space>AS<seq2seq4repair_space>SCOPE_TABLE," ) + "CAST(NULL<seq2seq4repair_space>AS<seq2seq4repair_space>SMALLINT)<seq2seq4repair_space>AS<seq2seq4repair_space>SOURCE_DATA_TYPE<seq2seq4repair_space>" ) + "FROM<seq2seq4repair_space>SYSIBM.SYSDUMMY1<seq2seq4repair_space>WHERE<seq2seq4repair_space>1=0<seq2seq4repair_space>WITH<seq2seq4repair_space>UR" ) ;